scope:

A tack coat is the application of an emulsified asphalt or performance-graded (PG) asphalt binder, to an existing pavement surface just prior to placement of a pavement overlay course. The tack coat is used to ensure a good bond between an existing asphalt or concrete pavement and a pavement overlay course, between multiple pavement lifts of a structural pavement, and at any vertical surfaces to which a new pavement layer will be placed adjacent, such as curbs, gutters, utilities, and construction joints.

Document History

AASHTO MP 36

January 1, 2018

Standard Specification for Materials for Asphalt Tack Coat

This standard specifies quality requirements for emulsified asphalt or performance-graded asphalt binder for tack coats.
A tack coat is the application of an emulsified asphalt or...

This specification covers the quality and grading of fine aggregate for hydraulic cement concrete used in pavements or bases, highway bridges, and incidental structures. This specification is for use...